Polyurethane resin
US-2015291758-A1 · Oct 15, 2015 · US
Low-resilience polyurethane foam and production method thereof
US9611370B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9611370-B2 |
| Application number | US-201314775367-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 15, 2013 |
| Priority date | Mar 15, 2013 |
| Publication date | Apr 4, 2017 |
| Grant date | Apr 4, 2017 |
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- Title
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Abstract
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A low-resilience polyurethane foam is produced by allowing a low-resilience polyurethane foam composition containing polyisocyanate (a), polyol (b), catalyst (c), and blowing agent (d) to react. The polyisocyanate (a) contains bis(isocyanatomethyl)cyclohexane, and the polyol (b) contains 5 to 30 mass % of polyol (b-1) having an average functionality of 1.5 to 4.5 and a hydroxyl number of 20 to 70 mgKOH/g, and 70 to 95 mass % of polyol (b-2) having an average functionality of 1.5 to 4.5 and a hydroxyl number of 140 to 300 mgKOH/g.
First claim
Opening claim text (preview).
The invention claimed is: 1. A low-resilience polyurethane foam produced by allowing a low-resilience polyurethane foam composition containing polyisocyanate (a), polyol (b), catalyst (c), blowing agent (d) and cross-linking agent (e) to react, wherein the polyisocyanate (a) comprises bis(isocyanatomethyl)cyclohexane, and the polyol (b) comprises, 5 to 30 mass % of polyoxypropylenepolyol (b-1) having an average functionality of 1.5 to 4.5 and a hydroxyl number of 20 to 70 mgKOH/g, and 70 to 95 mass % of polyol (b-2) having an average functionality of 1.5 to 4.5 and a hydroxyl number of 140 to 300 mgKOH/g, the bis(isocyanatomethyl)cyclohexane contains cis-1,4-bis(isocyanatomethyl)cyclohexane and trans-1,4-bis(isocyanatomethyl)cyclohexane, the bis(isocyanatomethyl)cyclohexane contains 80 mol % or more and 93 mol % or less of trans-1,4-bis(isocyanatomethyl)cyclohexane, and an impact resilience determined in conformity with JIS K 6400 (2004) is 14% or less. 2. The low-resilience polyurethane foam according to claim 1 , wherein the polyol (b-2) is polyoxyalkylene polyol comprising 10 mass % or more of oxyethylene unit and 90 mass % or less of oxypropylene unit. 3. The low-resilience polyurethane foam according to claim 1 , wherein the cross-linking agent (e) comprises alkanolamine. 4. The low-resilience polyurethane foam according to claim 3 , wherein the alkanolamine comprises triisopropanolamine. 5. A method for producing a low-resilience polyurethane foam, the method comprising: allowing a low-resilience polyurethane foam composition containing polyisocyanate (a), polyol (b), catalyst (c), blowing agent (d) and cross-linking agent (e) to react and foam, thereby producing a low-resilience polyurethane foam, wherein the polyisocyanate (a) comprises bis(isocyanatomethyl)cyclohexane, and the polyol (b) comprises, 5 to 30 mass % of polyoxypropylenepolyol (b-1) having an average functionality of 1.5 to 4.5 and a hydroxyl number of 20 to 70 mgKOH/g, and 70 to 95 mass % of polyol (b-2) having an average functionality of 1.5 to 4.5 and a hydroxyl number of 140 to 300 mgKOH/g, the bis(isocyanatomethyl)cyclohexane contains 80 mol % or more and 93 mol % or less of trans-1,4-bis(isocyanatomethyl)cyclohexane, and an impact resilience determined in conformity with JIS K 6400 (2004) is 14% or less.
Assignees
Inventors
Classifications
with compounds of group C08G18/3271 · CPC title
Manufacture of cellular products · CPC title
having alkylene polyamine groups · CPC title
containing at least two isocyanate or isothiocyanate groups linked to the cycloaliphatic ring by means of an aliphatic group · CPC title
- C08G18/4837Primary
and other oxyalkylene units · CPC title
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- What does patent US9611370B2 cover?
- A low-resilience polyurethane foam is produced by allowing a low-resilience polyurethane foam composition containing polyisocyanate (a), polyol (b), catalyst (c), and blowing agent (d) to react. The polyisocyanate (a) contains bis(isocyanatomethyl)cyclohexane, and the polyol (b) contains 5 to 30 mass % of polyol (b-1) having an average functionality of 1.5 to 4.5 and a hydroxyl number of 20 to …
- Who is the assignee on this patent?
- Mitsui Chemicals Inc
- What technology area does this patent fall under?
- Primary CPC classification C08G18/4837. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 04 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).